Break it off boy, Cuz you got me feeling naughty
I wanna know boy, if I can be your shawty
Set it off boy, make me hot all over my body
Break it off tonighttttt
Break it off was from AGLM. It doesn't count seeing as Sean Paul was the featuring artist, not Rihanna.
Usually it does take about 6 months for her, but for TTT really she only had September-November to record; WFL, WHYB and TTT were the only ones done before that.
Though it does seem like she's moving rather quickly, she'll have worked with at least 6 Producers already this month and we've only just heard that she started recording. RedOne is coming next month, along with SHM.
Seems likely it'll be another November release. There's no use releasing in December/January if they can't get those BF sales. If they aren't releasing in November, then they might as well wait until March.